Sig Sauer P226 (Blackwater). It's in use by member Headhunter North.

Specifications

Weight: 1.135kg.
Length: 220mm.
Capacity: 27 rounds.
Power: 345 fps.
Power source: CO2.
Heavy blowback.
Single shot.

Accessoires

None.

Practise

How does this side arm work in the field?
The blowback is heavy, espcially for an airsuft gun.
This airsoft gun works on CO2, so it will not work under cold conditions. The main reason for this sidearm is for military simulation and sometimes for CQB (Close Quarter Battle) whereby you yell "Pang" when too close in range (mostly inside 5 meter distance). When you use a sniper rifle or DMR your are obligated to have a sidearm too in Holland.
A review (in Dutch) can be found here by member Headhunter.